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Grade 6 Chemistry

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.
People must have _______ to drink in order to survive.
a)
frozen water
b)
clean water
c)
contaminated water
d)
polluted water
2.

What is the best way to purify water?

a)

Add salt

b)

Put inside the refrigerator

c)

Filtration or Boiling

d)

Find a very clean stream of water

3.

What does chlorination do to the water?

a)

kills microorganisms

b)

Cleans the water

c)

Makes the water taste nice

d)

Removes twigs and sediment

4.

Used to separate suspended particles from a liquid

a)

Filtration

b)

Distillation

c)

Crystallisation

d)

Evaporation

5.

Used to separate a dissolved solid from its solution

a)

Filtration

b)

Evaporation

c)

Crystallisation

d)

Sublimation

6.

what is added during coagulation process in water treatment plant

a)

alum and slaked lime

b)

florida

c)

chlorine

d)

calcium carbonate

7.

Can sand pass through filter paper?

a)

Yes

b)

No

8.

During the purification process, filtration separates the

a)

Solid purities

b)

Solid impurities

9.

Th components of filtration are separated based on

a)

boiling point

b)

solubility

c)

particle size

10.

Is water purified by Solar Purification good to health.

a)

Yes

b)

No

11.

Used to separate an insoluble solid from liquid or soluble solid

a)

Filtration

b)

Distillation

c)

Crystallisation

d)

Evaporation

12.

During the purification process, filtration separates the

a)

Solid purities

b)

Solid impurities